package Stack;

import java.util.Stack;

public class CheckBracketIsvalid {
    public boolean isValid(String s) {
        Stack<Character> stack = new Stack<>();
        for(int i =0;i<s.length();i++){
            char ch = s.charAt(i);
            if(ch=='('||ch=='['||ch=='{'){
                stack.push(ch);
            }else{
                if(stack.empty()) {
                    return false;
                }
                char top = stack.peek();
                if(ch==')'&&top=='('||ch==']'&&top=='['||ch=='}'&&top=='{'){
                    stack.pop();
                }else{
                    return false;
                }
            }
        }
        if(!stack.empty()){
            return false;
        }
        return true;
    }
}
